1. Notes Over 8.5 Exponential Growth
C is initial amount
t is the time period
r is the growth rate
Use the exponential growth model to find the account balance.
1. A principal of $450 is deposited in an account that pays 2.5% interest compounded yearly. Find the account balance after 2 years.

2. Notes Over 8.5 Exponential Growth
C is initial amount
t is the time period
r is the growth rate
Use the exponential growth model to find the account balance.
2. A principal of $800 is deposited in an account that pays 3% interest compounded yearly Find the account balance after 5 years.

3. Notes Over 8.5 Exponential Growth Writing an Exponential Growth Model
C is initial amount
t is the time period
r is the growth rate
Writing an Exponential Growth Model
3. A population of 50 pheasants is released in a wildlife reserve. The population triples each year for 3 years. What is the population after 3 years?

4. Notes Over 8.5
4. Graph the exponential growth model in Exercise 3.
x y
5000
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3000
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1000

5. Notes Over 8.5